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| author | Eric Dumazet | 2016-02-12 07:02:53 +0100 |
|---|---|---|
| committer | David S. Miller | 2016-02-17 02:27:35 +0100 |
| commit | cd9b266095f422267bddbec88f9098b48ea548fc (patch) | |
| tree | 0b7f6c9c5660fbdf2e0e78112780ce1a16eff7a3 /include/uapi/linux/tcp.h | |
| parent | Merge branch 'unified-tunnel-dst-caching' (diff) | |
| download | kernel-qcow2-linux-cd9b266095f422267bddbec88f9098b48ea548fc.tar.gz kernel-qcow2-linux-cd9b266095f422267bddbec88f9098b48ea548fc.tar.xz kernel-qcow2-linux-cd9b266095f422267bddbec88f9098b48ea548fc.zip | |
tcp: add tcpi_min_rtt and tcpi_notsent_bytes to tcp_info
tcpi_min_rtt reports the minimal rtt observed by TCP stack for the flow,
in usec unit. Might be ~0U if not yet known.
tcpi_notsent_bytes reports the amount of bytes in the write queue that
were not yet sent.
This is done in a single patch to not add a temporary 32bit padding hole
in tcp_info.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/tcp.h')
| -rw-r--r-- | include/uapi/linux/tcp.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index 65a77b071e22..fe95446e9abf 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -196,6 +196,9 @@ struct tcp_info { __u64 tcpi_bytes_received; /* RFC4898 tcpEStatsAppHCThruOctetsReceived */ __u32 tcpi_segs_out; /* RFC4898 tcpEStatsPerfSegsOut */ __u32 tcpi_segs_in; /* RFC4898 tcpEStatsPerfSegsIn */ + + __u32 tcpi_notsent_bytes; + __u32 tcpi_min_rtt; }; /* for TCP_MD5SIG socket option */ |